Comment on the possible electron neutrino excess in the Super-Kamiokande atmospheric neutrino experiment

Details Comment on the possible electron neutrino excess in the Super-Kamiokande atmospheric neutrino experiment Comment on the possible electron neutrino excess in the Super-Kamiokande atmospheric neutrino experiment

1998-09-23

arxiv.org/abs/hep-ph/9809491v2

Phys.Lett. B444 (1998) 204-207

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, REVTEX, a revised version with more references and minor modifications

Scientific paper

10.1016/S0370-2693(98)01382-3

We investigate the implications of a possible excess of the electron neutrino events in the Super-Kamiokande atmospheric neutrino experiment. The excess, if real, leads to constraints on the $\nu_\mu \leftrightarrow \nu_e$, $\nu_\mu \leftrightarrow \nu_\tau$ and $\nu_e \leftrightarrow \nu_\tau$ oscillation parameters. Specifically, the excess impies that $\nu_e - \nu_\mu$ and $\nu_\mu - \nu_\tau$ mixings are large and $\nu_e - \nu_\tau$ mixing is small. We show that the electron neutrino excess favors the large mixing angle MSW solution of the solar neutrino problem.

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